# New Source Review Regulations; Correction
> **Rule** · Final rule; correction. · Published 2021-07-19 · Effective 2021-08-18 · 86 FR 37918
## Document
- **Document number:** 2021-13905
- **Category:** air-emissions
- **Federal Register citation:** 86 FR 37918
- **CFR reference:** 40 CFR 51
- **Publication date:** 2021-07-19
- **Effective date:** 2021-08-18
- **EPA docket:** EPA-HQ-OAR-2019-0435
## Abstract

The Environmental Protection Agency (EPA) is amending several New Source Review (NSR) regulations by making the following types of changes: Correcting typographical and grammatical errors, removing court vacated rule language, removing or updating outdated or incorrect cross references, conforming certain provisions to changes contained in the 1990 Clean Air Act (CAA or Act) Amendments, and removing certain outdated grandfathering or transitional exemptions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/07/19/2021-13905/new-source-review-regulations-correction)
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